Method 1:
  1. Open Internet Explorer
  2. Select Tools icon User-added image
  3. Click Internet Options
  4. Under Browsing history, select Delete...
    • Note: A pop-up will appear with a list of things that can be deleted. In general, the default options do not need to be changed
  5. Select Delete
  6. Close all windows using Internet Explorer and re-open
Method 2:
  1. Open Internet Explorer
  2. Hold down Ctrl, Shift, and Delete keys simultaneously
    • Note: Delete Browsing History pop-up will appear
  3. Check the boxes labeled Cookies and website data and Temporary Internet files and website files
  4. Uncheck all other boxes
  5. Click Delete
  6. Close all instances of Internet Explorer and re-open
 
Please see these articles to clear cache and cookies in other browsers: